Finding the Fourth Proportional to 11,449.19, 15,807.59 and 7,148.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,449.19 : 15,807.59 = 7,148.83 : x
2. Step 2: Convert to fraction form
   11,449.19/15,807.59 = 7,148.83/x
3. Step 3: Cross multiply
   11,449.19x = 15,807.59 × 7,148.83
4. Step 4: Simplify right side
   11,449.19x = 113,005,762.80
5. Step 5: Solve for x
   x = 113,005,762.80/11,449.19
6. Step 6: Final answer
   x = 9,870.20